1,3

Antti Karttunen, Table of n, a(n) for n = 1..10001

a(1) = 0, a(n) = A252372(n) + a(n-1).

Other identities. For all n >= 1:

a(A251726(n)) = n. [This works as an inverse or ranking function for the injection A251726.]

(Scheme, with memoization-macro definec)

(definec (A252373 n) (if (<= n 1) 0 (+ (A252372 n) (A252373 (- n 1)))))

Cf. A251726, A252372, A252459.

Sequence in context: A079631 A269849 A228881 * A245338 A160755 A017873

Adjacent sequences: A252370 A252371 A252372 * A252374 A252375 A252376

nonn

Antti Karttunen, Dec 17 2014

approved