A276338 a(n) = A276333(n) * A001563(1+A258198(n)).

0, 4, 8, 12, 18, 18, 18, 18, 36, 36, 36, 36, 54, 54, 54, 54, 72, 72, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 96, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 288, 384

Offset

0,2

Comments

a(n) is obtained by first replacing with zeros all other digits except the leftmost (the most significant) in the greedy A001563-base representation of n (A276326), then appending an extra zero to the right, then converting back to decimal.

An auxiliary function for computing A276340.

Links

Antti Karttunen, Table of n, a(n) for n = 0..4320

Formula

a(n) = A276333(n) * A001563(1+A258198(n)).

Other identities. For all n >= 0:

a(n) = A276340(A276334(n)).

Prog

(Scheme) (define (A276338 n) (* (A001563 (+ 1 (A258198 n))) (A276333 n)))

Crossrefs

Cf. A001563, A258198, A276326, A276333, A276334, A276340.

Sequence in context: A098573 A092753 A376852 * A079774 A311555 A311556

Adjacent sequences: A276335 A276336 A276337 * A276339 A276340 A276341

Keyword

nonn,base

Author

Antti Karttunen, Sep 01 2016

Status

approved