17915904

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*12^j.at n=22A038338
• Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*12^j.at n=26A038338
• Fourth column of triangle A067417.at n=7A067419
• Expansion of 3*x*(1-x)*(1+2*x+6*x^2)/(1-24*x^3).at n=15A076509
• a(n) = (a(n-1) * a(n-6) + a(n-3) * a(n-4)) / a(n-7) (a variant of Somos-7).at n=23A078495
• Expansion of (1+6x)/(1-12x^2).at n=13A107904
• Cumulative product of A000120.at n=23A121853
• Number of compositions of even natural numbers in 7 parts <= n.at n=11A191494
• Number of compositions of odd natural numbers into 7 parts <=n.at n=11A191900
• Pyramid P(n, t, d) read by planes and rows, for 0 <= t+d <= n: number of ways n triples can sit in a row so that exactly t triples are together and exactly d triples are separated into a couple and a loner.at n=24A192990
• a(n) = floor(sqrt(n)) * a(n-1), starting with 1.at n=18A195458
• Partial products of A052901.at n=20A208131
• Number of n X 1 arrays of permutations of 0..n*1-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 7.at n=23A264791
• Power and multiply: distinct numbers a^b * c^d * e^f * g^h * i^j where a..j are permutations of 0..9.at n=24A266914
• a(n) = product of first k composites, with the i-th composite raised to the d-th power, where k = A055642(n) and d is the i-th digit of n.at n=36A270142
• a(n) = Product_{k=2..n} (k^2-k)^k.at n=3A272167
• Numbers k such that k^6 is sum of two positive 7th powers.at n=5A291832
• Numbers k such that phi^e(k) > phi^e(m) for all m < k, where phi^e(k) = A072911(k) is the number of divisors d of k such that d and k are exponentially coprime.at n=13A307004
• Terms of A025487 from which the distance to the next larger prime is a composite number.at n=12A329894
• Numbers at which the sum of the iterated exponential totient function (A331273) attains a record.at n=13A331407