A319504 - OEIS

A319504

Indices of valleys (i.e. local minima) in A064800.

13, 17, 19, 25, 29, 31, 33, 37, 41, 43, 49, 53, 55, 57, 61, 65, 67, 71, 73, 79, 85, 89, 91, 97, 101, 103, 109, 113, 121, 127, 129, 131, 133, 137, 139, 141, 145, 149, 151, 157, 161, 163, 169, 173, 177, 181, 185, 191, 193, 197, 199, 201, 205, 209, 211, 217, 221, 223, 229, 233, 235, 239, 241, 244, 249, 251, 253, 257, 265, 269, 271, 277, 281, 283, 289, 293, 295, 298

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..78.

EXAMPLE

A064800(13) is the first minimum in A064800: A064800(12) = 15, A064800(13) = 14 and A064800(14) = 16 and hence a(1) = 13.

PROG

(PARI) lista(nn) = {my(v = vector(nn, n, n + bigomega(n))); for (n=2, nn, if ((v[n] < v[n-1]) && (v[n] < v[n+1]), print1(n, ", ")); ); } \\ Michel Marcus, Sep 21 2018

CROSSREFS

Cf. A064800, A317743.

Sequence in context: A167802 A105878 A054476 * A339912 A099184 A098095

Adjacent sequences: A319501 A319502 A319503 * A319505 A319506 A319507

KEYWORD

nonn

AUTHOR

Zak Seidov, Sep 20 2018

EXTENSIONS

More terms from Michel Marcus, Sep 21 2018

STATUS

approved