30123

Appears in sequences

• Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 3,0,1,2.at n=4A037764
• Number of compositions of n with parts in N which avoid the adjacent pattern 111.at n=17A128695
• Append three digits, each increasing by one modulo 10 from the last digit of the nonnegative integers. 0 -> 123, 1 -> 1234 2 -> 2345, ... , 9 -> 9012, 10 -> 10123, etc.at n=30A167231
• Terms of the Leibniz formula (as Euler product) that generate successively better approximations to Pi.at n=16A261208