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A372293
Odd numbers that do not occur in the odd bisection of A371094.
3
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
1,2
COMMENTS
Odd numbers that do not occur in array A371100.
LINKS
PROG
(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));
CROSSREFS
Setwise difference A005408 \ A372290.
Subsequences: A004767, A017077.
Sequence in context: A305468 A143452 A376342 * A288452 A338316 A193414
KEYWORD
nonn
AUTHOR
Antti Karttunen, Apr 26 2024
STATUS
approved