35245

Appears in sequences

• a(n) is the concatenation of n and 7n.at n=34A009441
• Convolution of odd numbers and A001950.at n=33A023659
• Denominator of Bernoulli(2n+2) - Bernoulli(2n).at n=26A029763
• Terms of A050530 with four prime divisors.at n=21A053340
• Triangular numbers which are also happy numbers (cf. A007770).at n=41A076712
• Triangle read by rows in which the n-th row contains the n smallest triangular numbers with the least significant digits of the n-th triangular number.at n=41A095225
• Coefficients of the D-Dyson mod 27 identity.at n=45A104504
• Triangular numbers whose digit reversal is a brilliant number (A078972).at n=9A115678
• Number of base 23 circular n-digit numbers with adjacent digits differing by 2 or less.at n=6A124951
• Numbers of the form m = p1 * p2 * p3 * p4 where for each d|m we have (d+m/d)/2 prime and p1 < p2 < p3 < p4 each prime.at n=7A128285
• The positions of zeros in A163898 and A163899.at n=38A165403
• Least k with precisely n partitions k = x + y satisfying sigma(k) = sigma(x) + sigma(y).at n=21A211224
• Number of (w,x,y,z) with all terms in {1,...,n} and w <= x > y <= z.at n=20A212246
• Triangular numbers of the form 2p-1 where p is prime.at n=34A217000
• Triangular numbers whose binary conversion, read in decimal, is prime.at n=10A227028
• The least k such that the polynomial cyclotomic(k,x) has n different coefficients.at n=39A231611
• Pyramidal centered square numbers.at n=11A237516
• Product of n and the sum of all divisors of all positive integers <= n.at n=34A256533
• Hexagonal numbers (A000384) that are the sum of fourteen consecutive hexagonal numbers.at n=0A257724
• Expansion of x*(1 + 3*x + x^2)/((1 - x)^5*(1 + x)^4).at n=38A287143