A284007 a(n) = a(a(n-A002487(n))) + a(n-a(n-A002487(n))) with a(1) = a(2) = 1, where A002487 = Stern-Brocot sequence.

1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 7, 7, 8, 8, 9, 10, 11, 11, 11, 12, 12, 14, 13, 14, 14, 15, 16, 15, 16, 16, 18, 18, 18, 19, 19, 20, 20, 22, 22, 24, 23, 25, 24, 25, 25, 25, 26, 26, 27, 27, 28, 29, 28, 30, 29, 30, 31, 30, 32, 34, 34, 33, 33, 34, 34, 36, 37, 36, 37, 38, 38, 40, 41, 39, 40, 43, 42, 44, 43, 43, 44, 44, 45, 45, 45, 50

Offset: 1

Author

Antti Karttunen, Mar 23 2017

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..16384

Crossrefs

Cf. A002487, A004001, A283474, A284000, A284007, A284013.

Formula

a(1) = a(2) = 1, for n > 2, a(n) = a(a(A284013(n))) + a(n-a(A284013(n))).