A257803 Positions of odd numbers in A233271, the infinite trunk of inverted binary beanstalk.

1, 4, 7, 9, 12, 17, 18, 21, 23, 24, 25, 27, 30, 34, 35, 38, 41, 42, 49, 52, 53, 54, 55, 57, 60, 64, 65, 68, 70, 73, 74, 75, 76, 77, 81, 82, 83, 90, 93, 95, 96, 103, 106, 107, 108, 109, 111, 114, 118, 119, 122, 127, 128, 131, 132, 134, 136, 137, 138, 139, 140, 145, 147, 148, 149, 150, 151, 155, 156, 157, 164, 167, 168, 171

Offset: 1

Author

Antti Karttunen, May 12 2015

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..7973

Crossrefs

Complement: A257804.

Cf. A233271, A257800, A257806, A257807.

Formula

Other identities:

For all n >= 1, A257807(a(n)) = n. [A257807 works as a left inverse for this injective function.]