42424

Appears in sequences

• Decimal concatenations of the 38 quintuples (d1,d2,d3,d4,d5) with elements in {2,4,6} for which there exists a prime p >= 7 such that the differences between the 6 consecutive primes starting with p are (d1,d2,d3,d4,d5).at n=10A078870
• Starting positions of strings of three 4's in the decimal expansion of Pi.at n=32A083615
• Palindromes of the form 3n + 1 where n is also a palindrome: palindromes arising in A083829.at n=13A083830
• Palindromes in which the sum of the internal digits = the sum of the external digits.at n=24A088285
• Number of sequences of 2's and 3's of length n with curling number 3.at n=17A217212
• a(n) = 82*2^n + 440.at n=9A305268
• Numbers with all digits even whose squares have all but one digit odd.at n=14A343728