A263260 a(n) = number of nonnegative integers k for which A155043(k) <= n; partial sums of A262507.

1, 3, 6, 11, 15, 20, 26, 30, 34, 38, 46, 50, 54, 59, 67, 74, 81, 88, 95, 103, 108, 114, 120, 128, 138, 145, 153, 160, 167, 172, 177, 183, 189, 197, 203, 210, 217, 224, 228, 233, 238, 244, 250, 258, 265, 270, 275, 281, 288, 299, 304, 308, 313, 321, 333, 340, 349, 354, 362, 370, 379, 389, 403

Offset

0,2

Links

Antti Karttunen, Table of n, a(n) for n = 0..10000

Formula

a(0) = 1; for n >= 1, a(n) = A262507(n) + a(n-1).

Prog

(Scheme, with memoization-macro definec)
(definec (A263260 n) (if (zero? n) (A262507 n) (+ (A262507 n) (A263260 (- n 1)))))

Crossrefs

Cf. A000005, A049820, A155043, A262507, A263265, A263270.

Sequence in context: A368384 A113960 A287075 * A324773 A152682 A059753

Adjacent sequences: A263257 A263258 A263259 * A263261 A263262 A263263

Keyword

nonn

Author

Antti Karttunen, Nov 24 2015

Status

approved