46221

Appears in sequences

• Numbers k such that sopf(k) = sopf(k+3), where sopf(k) = A008472(k).at n=31A063969
• a(n) = (8*n+5)*(8*n+9).at n=26A146302
• a(n) = 100*n^2 + 100*n + 21.at n=21A152161
• Totally multiplicative sequence with a(p) = 10p+1 for prime p.at n=41A166668
• Small rhombicosidodecahedron with faces of centered polygons.at n=10A193251
• a(n) = (-1)^n*(n + 1)*(5*n^2 + 10*n + 1).at n=20A271532
• Expansion of Sum_{i>=1} mu(i)^2*x^i/(1 - x^i) * Product_{j=1..i} 1/(1 - mu(j)^2*x^j), where mu() is the Moebius function (A008683).at n=49A284835
• Sum over all partitions of n of the number of elements with minimal multiplicity in their partition.at n=36A372632
• The product of n's prime powers, with the base and exponent concatenated.at n=41A376294
• Odd numbers m for which A379113(m^2) > 1, i.e., k = m^2 has a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).at n=49A379122