A257682 Partial sums of A257680: a(0) = 0; for n >= 1, a(n) = A257680(n) + a(n-1).

0, 1, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10, 10, 11, 12, 13, 13, 14, 14, 15, 16, 17, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 42, 43, 44, 45, 45, 46, 47, 48, 49, 50, 51, 52, 52, 53, 54, 55, 55, 56, 56, 57, 58, 59, 59, 60, 60, 61

Offset

0,3

Links

Antti Karttunen, Table of n, a(n) for n = 0..10080

Formula

a(0) = 0; for n >= 1, a(n) = A257680(n) + a(n-1).

Other identities:

a(n) = A273662(n)+1.

Prog

(Scheme, with memoization-macro definec)
(definec (A257682 n) (if (zero? n) n (+ (A257680 n) (A257682 (- n 1)))))

Crossrefs

Cf. A257680, A257681.

One more than A273662.

Sequence in context: A162621 A180446 A095394 * A029928 A101788 A348776

Adjacent sequences: A257679 A257680 A257681 * A257683 A257684 A257685

Keyword

nonn

Author

Antti Karttunen, May 04 2015

Extensions

Description edited because of the changed starting offset of A256450 - Antti Karttunen, May 30 2016

Status

approved