A185012 Characteristic function of two.

0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset: 0

Author

Jason Kimberley, Oct 11 2011

Keywords

• nonn
• easy

Comments

The Euler transformation of this sequence is A059841.

This sequence is the first differences of A157928.

Links

• Index entries for linear recurrences with constant coefficients, signature (1).

Crossrefs

Cf. A171386.

Characteristic function of g: A000007 (g=0), A063524 (g=1), this sequence (g=2), A185013 (g=3), A185014 (g=4), A185015 (g=5), A185016 (g=6), A185017 (g=7).

Programs

Python

def A185012(n): return int(n==2) # Chai Wah Wu, Feb 04 2022