0,1

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

A. Karttunen, Ratio a(n)/A263252(n) drawn with OEIS Plot2-script

a(0) = A263251(n); for n >= 1, a(n) = A263251(n) + a(n-1).

(PARI) \\ See program at A263251.

(Scheme, with memoization-macro definec)

(definec (A263253 n) (if (zero? n) (A263251 n) (+ (A263251 n) (A263253 (- n 1)))))

Cf. A263250, A263252.

Cf. also A263085, A262516, A263278.

Sequence in context: A130499 A020910 A029065 * A162157 A060210 A260460

Adjacent sequences: A263250 A263251 A263252 * A263254 A263255 A263256

nonn

Antti Karttunen, Nov 07 2015

approved