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A365799
Parity of the Dirichlet inverse of the characteristic function of triangular numbers (A010054).
2
1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
OFFSET
1
FORMULA
a(n) = A000035(A365800(n)).
PROG
(PARI) A365799(n) = (A365800(n)%2); \\ Uses also code from A365800.
CROSSREFS
Sequence A365800 reduced modulo 2.
Sequence in context: A173857 A114482 A371844 * A186518 A127829 A127831
KEYWORD
nonn
AUTHOR
Antti Karttunen, Oct 05 2023
STATUS
approved