43361
domain: N
Appears in sequences
- Number of 2's in n-th term of A006711.at n=41A022478
- Numbers m such that m and m+2 are both brilliant numbers, where brilliant numbers are semiprimes whose prime factors have an equal number of decimal digits, or whose prime factors are equal.at n=23A083284
- Smallest k such that both k-n and k+n are primes and there are no primes between them.at n=30A087378
- Numbers n such that n*(n+1)/2 is the juxtaposition of two identical strings in binary representation.at n=39A092739
- Indices of primes in sequence defined by A(0) = 49, A(n) = 10*A(n-1) - 51 for n > 0.at n=19A101725
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (0, 1, 0), (0, 1, 1), (1, 0, -1)}.at n=9A149953
- a(n) = number of semistandard Young tableau families, headed by a father SSYT, containing daughter SSYT of shape equal to once-trimmed father's shape, so that union of families equals all SSYT with sum of entries n.at n=27A228129
- Composites in base 10 that remain composite in exactly four bases b, 2 <= b <= 10, expansions interpreted as decimal numbers.at n=19A256354
- a(n) is the smallest number m, such that m+n is the next prime and m-n is the previous prime.at n=29A282690