A244989 Partial sums of A244992: a(1) = 0, and for n >= 1, a(n) = A244992(n) + a(n-1); Inverse function for A244991.

0, 1, 1, 2, 3, 3, 3, 4, 4, 5, 6, 6, 6, 6, 7, 8, 9, 9, 9, 10, 10, 11, 12, 12, 13, 13, 13, 13, 13, 14, 15, 16, 17, 18, 18, 18, 18, 18, 18, 19, 20, 20, 20, 21, 22, 23, 24, 24, 24, 25, 26, 26, 26, 26, 27, 27, 27, 27, 28, 29, 29, 30, 30, 31, 31, 32, 33, 34, 35, 35, 35, 35, 36, 36, 37

Offset: 1

Author

Antti Karttunen, Jul 22 2014

Keywords

• nonn

Links

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

Crossrefs

Cf. A244988, A244991, A244992, A244321.

Formula

a(1) = 0, and for n >= 1, a(n) = A244992(n) + a(n-1).

a(n) = n - A244988(n).

For all n >= 1, a(A244991(n)) = n. [This works as an inverse function for the injection A244991].