A372293 Odd numbers that do not occur in the odd bisection of A371094.

1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137, 139, 143, 145, 147, 149, 151, 153, 155, 157

Offset: 1

Author

Antti Karttunen, Apr 26 2024

Keywords

• nonn

Comments

Odd numbers that do not occur in array A371100.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..14930

Crossrefs

Setwise difference A005408 \ A372290.

Cf. A371094, A371100.

Subsequences: A004767, A017077.

Programs

PARI

A371094(n) = { my(m=1+3*n, e=valuation(m,2)); ((m*(2^e)) + (((4^e)-1)/3)); };
isA372293(n) = if(!(n%2),0,forstep(k=1,n,2,if(A371094(k)==n,return(0))); (1));