19173961

Appears in sequences

• Numerators of the Taylor coefficients of (e^x-1)^2.at n=26A002678
• Divisors of 2^27 - 1.at n=6A003535
• Gaussian binomial coefficients [ n,8 ] for q = 8.at n=1A022248
• a(n) = (8^n - 1)/7.at n=9A023001
• a(n) = Sum_{k=0..n} n^k.at n=8A031973
• a(n) = floor(2^(n+2)/7).at n=24A033138
• Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,2.at n=12A037497
• a(n) = (2^n - 1)/product(2^p - 1) where the product is over all distinct primes p that divide n.at n=26A055515
• Terms in the decimal expansion of 1/(7*5^n) before the block of decimals 142857 (the period of 1/7) appears.at n=26A067703
• Numbers of the form (8^{mr}-1)/(8^r-1) for positive integers m, r.at n=20A076287
• Expansion of 1/(1 - x - x^2 - 2*x^3).at n=25A077947
• Expansion of (1-x)/(1 - x - x^2 - 2*x^3).at n=26A078010
• Triangle read by rows: T(n,k) = (n+1,k)-th element of (M^8-M)/7, where M is the infinite lower Pascal's triangle matrix, 1<=k<=n.at n=36A096042
• a(n) = Sum_{j=0..8} n^j.at n=8A102909
• Reduced numerators of 2*(2^(1+n)-1)/(1+n)/(2+n).at n=26A116419
• A modified Legendre-binomial transform of 2^n for p=3.at n=24A117981
• A modified Legendre-binomial transform of 2^n for p=3.at n=25A117981
• Trisection of A117981.at n=8A117982
• Triangle read by rows: T(n,k) = value of the n-th repunit in base (k+1) representation, 1<=k<=n.at n=42A125118
• a(n) = floor(4^n/n).at n=13A129794