171171

Appears in sequences

• Expansion of 1/((1-x)(1-7x)(1-11x)(1-12x)).at n=4A024446
• Lucky numbers that are concatenations of a number k with itself.at n=21A032650
• Odd abundant numbers not divisible by 5.at n=2A064001
• a(1) = 9; a(n) = smallest palindromic multiple of a(n-1).at n=3A068668
• Duplicate of A068668.at n=3A070068
• a(1) = 9, a(n) = smallest nontrivial palindromic multiple of a(n-1). a(n) is not equal to a(n-1) or a concatenation of a(n-1) with itself.at n=3A083155
• a(1) = 1; for n > 1, a(n) is the smallest number that is either a divisor or a multiple, in that priority (order), of a(n-1) such that it is a distinct palindrome not included earlier.at n=22A089337
• Exponential transform of C(n,6) = A000579.at n=14A145456
• a(n) is the smallest number whose name in US English contains n vowels.at n=20A158352
• a(n) is the smallest number greater than a(n-1) whose name in US English contains n vowels.at n=20A158353
• a(n) is the smallest number whose name in UK English contains n vowels.at n=22A158354
• a(n) is the smallest number greater than a(n-1) whose name in UK English contains n vowels.at n=22A158355
• Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=3, k=-1 and l=-1.at n=10A176956
• Dates after Jan 01 00 in chronological order which are palindromic when they are written in the format DD.MM.YY. The terms are listed as numbers (without the dots). Leading zeros of the terms are suppressed.at n=22A210888
• Palindromic numbers which can be written as the sum of two or more consecutive squares.at n=38A216446
• a(n) = 4^n*(n+1)*(8*n^2+32*n+33)*P(3/2,n)/(3*P(4,n)) where P(a,n) is the Pochhammer rising factorial.at n=6A217946
• a(n) = Sum_{i=1..n} (3i)^2.at n=38A220443
• Palindromes p = A002113(n) whose index n is a substring of p.at n=17A248753
• Consider numbers n = concat(w,x,y,z) such that w*x*y*z | n. Leading zeros in x, y and z allowed. Sequence lists numbers that admit at least two such concatenations.at n=29A257172
• Partition the integers from 1 to n into three groups with consecutive numbers, then a(n) is the maximum value of the sum of the numbers in the second group multiplied by the minimum of the sum of the numbers in the first and third groups.at n=45A342713